The following question was posted on another list. I will forward allrepliesposted to HM or sent directly to me.

- James A. Landau

>Date: Sun, 5 Feb 2006 13:20:23 -0500>From: "Joel S. Berson" <Berson@ATT.NET>>Subject: Q: "portagraion" -- a "mathematical instrument" circa 1745?> >What is a "portagraion", in the following quotation from 1745? I've>done my best in OED2 and googling with various possible>spellings. The mention just before of drawing pens suggests>"pantograph", but that's not close to what I see.